Thanks. But it's not needed. It's by default in the http lib.

Hello,
Thanks for you reactivity Quentin. But when I test on the updated master i've got the following :

./centreon_plugins.pl --plugin=apps::elasticsearch::plugin --mode=cluster --hostname=XXX.XXX.XXX.XXX
Use of uninitialized value in concatenation (.) or string at /var/lib/centreon/plugins/apps/elasticsearch/mode/cluster.pm line 80.

./centreon_plugins.pl --plugin=apps::elasticsearch::plugin --mode=cluster --hostname=XXX.XXX.XXX.XXX --port=9200 --urlpath=/
WARNING: Primary shards are allocated but replicas not for es_rpc_preprod | 'primary_shard'=5;;;0; 'shard'=5;;;0; 'unassigned_shard'=5;;;0;

You use the last github version ?

Done. Could you test it ?

It works great !
Thank you !!!
(I just get the way you did the change :))